.px2rem(@name, @px){
    @{name}: @px / 75 * 1rem;
}
.header{
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    .px2rem(height, 136);
    .px2rem(line-height, 136);
    background: black;
    color: white;
    .px2rem(font-size, 36);
    z-index: 110;
    h3{
        position: absolute;
        text-align: center;
        width: 100%;
    }
    .left{
        position: absolute;
        left: 3%;
        z-index: 200;
    }
}
.box{
    width: 100%;
    .px2rem(margin-top, 136);
    table{
        width: 100%;
        text-align: center;
        tr{
            display: flex;
            .px2rem(font-size, 34);
            .px2rem(line-height, 65);
            th{
                flex:1;
                border:1px solid #000;
            }
            td{
                flex:1;
                 border:1px solid #000;
            }
        }
    }
}